/Engine/Source/Runtime/AudioMixer/Public/AudioMixerBlueprintLibrary.h
Gets information about the currently used audio output device
static void GetCurrentAudioOutputDeviceName ( const [UObject](API\Runtime\CoreUObject\UObject\UObject) * WorldContextObject, const [FOnMainAudioOutputDeviceObtained](API\Runtime\AudioMixer\FOnMainAudioOutputDeviceObtained) & OnObtainCurrentDeviceEvent )